CO2 methanation over Ni/Mg@MCM-41 prepared by in-situ synthesis method
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Graphical Abstract
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Abstract
A series of xMg@MCM-41(x=0, 0.05, 0.1) functional mesoporous materials were synthesized by a novel in-situ one pot method and then were used as support for Ni based catalysts. The results of XRD and TEM show that when the amount of Mg/Si (molar ratio) is 0.05, Mg@MCM-4 with a regular and ordered mesoporous structure is synthesized where Mg is introduced into the framework of MCM-41. Introducing Mg into the framework of the support can significantly enhance the basic properties of the catalyst, thus promoting the adsorption and activation of CO2. The catalysts prepared in the experiments all have good thermal stability and catalytic activity. Among them, Ni/0.05Mg@MCM-41 shows the best low temperature reaction activity in the CO2 methanation reaction.
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